CAD系统与数据库间数据传输的方法和技术

详细介绍利用ActiveXAutomation提供的应用程序访问“对象”的接口技术 ,通过VisualBASIC创建AutoCADR14对象的方法 ,进而达到在其它应用程序中使用该对象 (AutoCAD)提供的功能的目的 .着重讨论图形数据在AutoCAD与数据库中互相传递和利用的过程 ,并且给出了描述这一过程的完整的程序例子 .     

计算机和全站仪的数据通讯

文中讨论了在计算机和全站仪之间进行数据通讯的关键技术 ,并以捷创力GDM 5 0 0系列全站仪为例用VisualBASIC程序设计语言给出了关键的源程序代码。     

BASIC语言在硫的气相色谱控制分析中的应用

火焰光度检测器气相色谱用于硫的检测线性范围很窄(<10~2),作者借助BASIC程序判断、选择合适的校正曲线以达到处理数据的目的。本方法在分析含有多种形态硫组份,且浓度参差不齐的气样时,更具特色。一次注样,便可完成全部硫组份的测定。     

Grainum-a program for the genetic interpretation of the grain-size distribution of sands

GRAINUM is a program that can be used in the genetic interpretation of grain-size distributions of sands and coarse silts. The algorithm is based on a transformation of weight-percent distributions to a number-frequency base and a following determination of mean, standard deviation, skewness, and excess. These statistics are plotted in two diagrams and interpreted in terms of the principal physical environmental factors (currents, waves, aeolian activity, and relevant combinations). The program is menu driven and easy-to-use.     

矿井三维巷道的半自动绘制

以AutoCAD为图形处理平台,采用手工绘制与编程绘制相结合的半自动绘制方法,即用Visual BASIC编程实现绘制三维巷道的关键语句,其他部分仍用手工绘制,再结合后期图件的修整即可完成复杂的三维巷道绘制。这种方法具有程序简单、绘制速度快、用户易于操作、便于后期应用开发等特点。     

零售业信息管理系统总体设计

本文通过对零售业现有管理系统进行分析设计,结合零售业在进、销、存方面的需求,进行系统的总体设计,主要完成了数据库设计,系统模块功能划分、代码设计等,系统采用VB语言和SQL Server2000作为开发工具,以C／S结构,实现对整个系统的信息化管理。     

BASIC programs to compute source densities from autoradiographic cross-fire matrices

Two different mathematical procedures to compute source densities from cross-fire matrices in quantitative EM autoradiography are reported. BASIC programs for a desk-top microcomputer were written to fit the hypothetical silver grain distribution to the observed real silver grain distribution using a non-iterative linear process (least-squares procedure) and an iterative method, which minimizes the chi-square component between the observed and computed silver grain distributions. The latter procedure uses a Gauss-Newton algorithm.     

NISOMI: a computer system for opaque mineral identification

NISOMI (Nottingham Interactive System for Opaque Mineral Identification) consists of a set of versatile computer programs and associated data files that use reflectance and microhardness measurements on opaque minerals in polished mounts for the purpose of mineral identification. The search algorithm is based upon interpolated reflectance measurements at four standard wavelengths (470, 546, 589, and 650 nm), chromaticity and microhardness (VHN). The programs are written in BASIC and structured for use on small computers.     

On testing orientation data for goodness-of-fit to a von Mises distribution

Statistical testing of two-dimensional orientation data (this is, in which each sample item can be described by a single “azimuth” value) usually assumes that the underlying population has a von Mises distribution. Attention is drawn to a difficulty associated with the fitting of a sample data set to this distribution and FORTRAN IV subroutines to overcome this are presented.